<template>
  <div class="login">
    <div class="login_box">
      <!-- header-image -->
      <div class="avatar_box">
        <img class="login_img" src="../../assets/imgs/Q版头像.png" alt="" />
      </div>

      <!-- login-form -->
      <el-form ref="loginFormRef" :rules="loginFormRules" :model="loginForm" label-width="0px" class="login_form">
        <!-- username -->
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" prefix-icon="el-icon-user"></el-input>
        </el-form-item>

        <!-- password -->
        <el-form-item prop="password">
          <el-input type="password" v-model="loginForm.password" prefix-icon="el-icon-unlock"></el-input>
        </el-form-item>

        <!-- button -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">login</el-button>
          <el-button type="info" @click="resetLoginForm">reset</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
import { login } from '@/api/users'

export default {
  name: 'login',
  data() {
    return {
      loginForm: {
        username: 'admin',
        password: '123456'
      },

      loginFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          {
            min: 3,
            max: 10,
            message: '长度在 3 到 10 个字符',
            trigger: 'blur'
          }
        ],
        password: [
          { required: true, message: '请输入登录密码', trigger: 'blur' },
          {
            min: 6,
            max: 15,
            message: '长度在 6 到 15 个字符',
            trigger: 'blur'
          }
        ]
      }
    }
  },
  methods: {
    login() {
      this.$refs.loginFormRef.validate(async valid => {
        if (valid) {
          const res = await login(this.loginForm)
          if (res.meta.status === 200) {
            window.sessionStorage.setItem('username', this.loginForm.username)

            this.$message.success(res.meta.msg)
            window.sessionStorage.setItem('token', res.data.token)
            const tokenStr = window.sessionStorage.getItem('token')
            if (tokenStr) {
              this.$router.push('/home')
            } else {
              console.log('!tokenStr==>', tokenStr)
            }
          } else {
            this.$message.error(res.meta.msg)
          }
        }
      })
    },

    resetLoginForm() {}
  }
}
</script>

<style scoped>
.login {
  background-image: url('../../assets/imgs/img-00.jpg');
  height: 100%;
}
.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  /* 绝对定位 */
  position: absolute;
  /* 距离左边50% */
  left: 50%;
  /* 距离上边50% */
  top: 50%;
  /* 进行位移，距离横轴和纵轴各位移-50% */
  transform: translate(-50%, -50%);
}
.avatar_box {
  height: 130px;
  width: 130px;
  border: 1px solid #eee;
  border-radius: 50%;
  padding: 10px;
  box-shadow: 0 0 10px #ddd;
  position: absolute;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: #fff;
}
.login_img {
  height: 100%;
  width: 100%;
  border-radius: 50%;
  background-color: #eee;
}
.btns {
  display: flex;
  justify-content: flex-end;
}
.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}
</style>
